(19) |
|
|
(11) |
EP 0 075 546 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
|
25.07.1984 Bulletin 1984/30 |
(43) |
Date of publication A2: |
|
30.03.1983 Bulletin 1983/13 |
(22) |
Date of filing: 13.09.1982 |
|
|
(84) |
Designated Contracting States: |
|
DE FR GB IT |
(30) |
Priority: |
21.09.1981 SE 8105555
|
(71) |
Applicant: BEROL KEMI AB |
|
() |
|
(72) |
Inventor: |
|
- Hellsten, Karl Martin Edvin
()
|
|
|
|
(54) |
Method for dry-cleaning textiles and the cleaning fluid used in the process |
(57) The textiles are washed in a cleaning fluid in the form of a microemulsion of water
in perchloroethylene having as its principal ingredients the following: perchloroethylene
65-93.8 percent by weight; emulsifier 2-6 percent by weight; solubilizing agent 0.2-4
percent by weight, and water 4-20 percent by weight, with the ratio of the weight
of the water to the weight of the emulsifier being in excess of 2:1. The emulsifier
contains of a mixture of
a) a calcium salt of an alkyl-aryl-sulphonic acid with a total of 14-22 carbon atoms;
and
b) a non-ionic surface-active alkylene oxide adduct, in which the alkylene oxide is
in the form of ethylene oxide or a combination of ethylene oxide and alkylene oxide
with 3-4 carbon atoms, and in which the hydrophobic part of the adduct contains 8-30
carbon atoms,
with the ratio of the weight of a) to the weight of b) lying in the range 1:4-3:1.
The solubilizing agents is an aliphatic monoalcohol with 4-10 carbon atoms.